International Ring Size Chart

All of our jewelry is displayed in standard US size, View the conversation chart to see how US sizes convert to Canada, Asia, UK and other countries.

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Circumference	Diameter	US Canada	UK Europe Australia	Asia Hong Kong, China, Taiwan Japan, Singapore, and Macau	Switzerland	Germany	France
mm	mm	Ring Size
44.2	14.1	3	F	4	4	14	44
44.8	14.3		F 1/2	5	5 1/4
45.5	14.5	3 1/2	G			14 1/2	45 1/2
46.1	14.7		G 1/2	6	6 1/2
46.8	14.9	4	H	7
47.4	15.1		H 1/2		7 3/4	15	46 1/2
48.0	15.3	4 1/2	I	8
48.7	15.5		J		9
49.3	15.7	5	J 1/2	9		15 3/4	49
50.0	15.9		K		10
50.6	16.1	5 1/2	K 1/2	10
51.2	16.3		L		11 3/4	16	51 1/4
51.9	16.5	6	L 1/2	11	12 3/4
52.5	16.7		M	12		16 1/2	51 1/2
53.1	16.9	6 1/2	M 1/2	13	14
53.8	17.1		N			17	52 3/4
54.4	17.3	7	N 1/2	14	15 1/4	17 1/4	54
55.1	17.5		O
55.7	17.7	7 1/2	O 1/2	15	16 1/2	17 1/2	55 1/2
56.3	17.9		P
57.0	18.1	8	P 1/2	16	17 3/4	18	56 3/4
57.6	18.3		Q
58.3	18.5	8 1/2	Q 1/2	17		18 1/2	58
58.9	18.8		R		19
59.5	19.0	9	R 1/2	18		19	59 1/4
60.2	19.2		S		20 1/4
60.8	19.4	9 1/2	S 1/2	19		19 1/2	60 1/2
61.4	19.6		T		21 1/2
62.1	19.8	10	T 1/2	20		20	61 3/4
63.4	20.2	10 1/2	U 1/2	22	22 3/4	20 1/4	62 3/4
64.0	20.4		V
64.6	20.6	11	V 1/2	23		20 3/4	64 1/4
65.3	20.8		W		25
65.9	21.0	11 1/2	W 1/2	24		21	66
66.6	21.2		X
67.2	21.4	12	X 1/2	25	27 1/2
67.8	21.6		Y			21 3/4	67 1/4
68.5	21.8	21 1/2	Z	26	28 3/4
69.1	22.0		Z 1/2			22
69.7	22.2	13		27
70.4	22.4		Z + 1
71.0	22.6	13 1/2

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